public class BookText {

    public static void main (String[] args){
        Book book = new Book();

        String info = book.getBookInfo();
        System.out.println(info);
        String bookNameSetBefore = book.getBookName();
        System.out.println("------------------------------");
        System.out.println(bookNameSetBefore);
        book.setBookName("红楼梦");
        String bookNameSetAfter = book.getBookName();
        System.out.println(bookNameSetAfter);
        System.out.println("-------------------------------");
        book.setPrice(300);
        book.setAuthor("曹雪芹");
        book.setPublisher("新华社出版");
        System.out.println(book.getBookInfo());
    }
}


